Reference

Edit This Page

Run this command in order to set up the Kubernetes master.

Synopsis

Run this command in order to set up the Kubernetes master.

The “init” command executes the following phases:

preflight                  Run master pre-flight checks
kubelet-start              Writes kubelet settings and (re)starts the kubelet
certs                      Certificate generation
  /ca                        Generates the self-signed Kubernetes CA to provision identities for other Kubernetes components
  /apiserver                 Generates the certificate for serving the Kubernetes API
  /apiserver-kubelet-client  Generates the Client certificate for the API server to connect to kubelet
  /front-proxy-ca            Generates the self-signed CA to provision identities for front proxy
  /front-proxy-client        Generates the client for the front proxy
  /etcd-ca                   Generates the self-signed CA to provision identities for etcd
  /etcd-server               Generates the certificate for serving etcd
  /etcd-peer                 Generates the credentials for etcd nodes to communicate with each other
  /etcd-healthcheck-client   Generates the client certificate for liveness probes to healtcheck etcd
  /apiserver-etcd-client     Generates the client apiserver uses to access etcd
  /sa                        Generates a private key for signing service account tokens along with its public key
kubeconfig                 Generates all kubeconfig files necessary to establish the control plane and the admin kubeconfig file
  /admin                     Generates a kubeconfig file for the admin to use and for kubeadm itself
  /kubelet                   Generates a kubeconfig file for the kubelet to use *only* for cluster bootstrapping purposes
  /controller-manager        Generates a kubeconfig file for the controller manager to use
  /scheduler                 Generates a kubeconfig file for the scheduler to use
control-plane              Generates all static Pod manifest files necessary to establish the control plane
  /apiserver                 Generates the kube-apiserver static Pod manifest
  /controller-manager        Generates the kube-controller-manager static Pod manifest
  /scheduler                 Generates the kube-scheduler static Pod manifest
etcd                       Generates static Pod manifest file for local etcd.
  /local                     Generates the static Pod manifest file for a local, single-node local etcd instance.
upload-config              Uploads the kubeadm and kubelet configuration to a ConfigMap
  /kubeadm                   Uploads the kubeadm ClusterConfiguration to a ConfigMap
  /kubelet                   Uploads the kubelet component config to a ConfigMap
mark-control-plane         Mark a node as a control-plane
bootstrap-token            Generates bootstrap tokens used to join a node to a cluster
addon                      Installs required addons for passing Conformance tests
  /coredns                   Installs the CoreDNS addon to a Kubernetes cluster
  /kube-proxy                Installs the kube-proxy addon to a Kubernetes cluster
kubeadm init [flags]

Options

--apiserver-advertise-address string
The IP address the API Server will advertise it's listening on. Specify '0.0.0.0' to use the address of the default network interface.
--apiserver-bind-port int32     Default: 6443
Port for the API Server to bind to.
--apiserver-cert-extra-sans stringSlice
Optional extra Subject Alternative Names (SANs) to use for the API Server serving certificate. Can be both IP addresses and DNS names.
--cert-dir string     Default: "/etc/kubernetes/pki"
The path where to save and store the certificates.
--config string
Path to kubeadm config file. WARNING: Usage of a configuration file is experimental.
--cri-socket string     Default: "/var/run/dockershim.sock"
Specify the CRI socket to connect to.
--dry-run
Don't apply any changes; just output what would be done.
--feature-gates string
A set of key=value pairs that describe feature gates for various features. Options are:
-h, --help
help for init
--ignore-preflight-errors stringSlice
A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.
--image-repository string     Default: "k8s.gcr.io"
Choose a container registry to pull control plane images from
--kubernetes-version string     Default: "stable-1"
Choose a specific Kubernetes version for the control plane.
--node-name string
Specify the node name.
--pod-network-cidr string
Specify range of IP addresses for the pod network. If set, the control plane will automatically allocate CIDRs for every node.
--service-cidr string     Default: "10.96.0.0/12"
Use alternative range of IP address for service VIPs.
--service-dns-domain string     Default: "cluster.local"
Use alternative domain for services, e.g. "myorg.internal".
--skip-phases stringSlice
List of phases to be skipped
--skip-token-print
Skip printing of the default bootstrap token generated by 'kubeadm init'.
--token string
The token to use for establishing bidirectional trust between nodes and masters. The format is [a-z0-9]{6}\.[a-z0-9]{16} - e.g. abcdef.0123456789abcdef
--token-ttl duration     Default: 24h0m0s
The duration before the token is automatically deleted (e.g. 1s, 2m, 3h). If set to '0', the token will never expire

Options inherited from parent commands

--rootfs string
[EXPERIMENTAL] The path to the 'real' host root filesystem.

Feedback